The SA-1258TG servo is a high torque servo and is perfect for those who are looking for a minimized backlash to use on flying surfaces of RC planes. 

Features

• Extremely strong titanium gears ensure long-life, durability, and light weight.
• Aluminum middle case allows for cooler operating temperatures.
• Minimized backlash for precision aerobatic airplane use.

Specifications
Torque @ 4.8v - 9.6kg/133.3oz-in
Torque @ 6v - 12.0kg166.6oz-in
Speed @ 4.8v - 0.10 sec/60 deg
Speed @ 6v - 0.08 sec/60 deg
Dimensions L x W x H (mm): 40.8 x 20.2 x 37.2
Weight: 64g

Technical Details
Operating Temperature: 14° - 122°F (-10° - 50°C)
Running Current (no load): 100mA @4.8V, 120mA @6.0V
Stall Current (at locked): 4000mA @4.8V, 5000mA @6.0V
Idle Current: 5mA @4.8V, 5mA @6.0V
Wire Length: 250 +/- 5mm
Output Spline: 25 Tooth
Bearings: 2BB
Operating Travel: 100° (1000 → 2000 µ second)
Neutral Position: 1500 µ second
Pulse Width Range: 800 → 2200 µ second
Maximum Travel: Appx 130° (900 → 2100 µ second)
Refresh Rate: 333 Hz
Motor Type: Coreless